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44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
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/* Copyright (c) 2012, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef TOR_CRYPTO_CURVE25519_H
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#define TOR_CRYPTO_CURVE25519_H
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#include "torint.h"
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/** Length of a curve25519 public key when encoded. */
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#define CURVE25519_PUBKEY_LEN 32
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/** Length of a curve25519 secret key when encoded. */
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#define CURVE25519_SECKEY_LEN 32
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/** Length of the result of a curve25519 handshake. */
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#define CURVE25519_OUTPUT_LEN 32
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/** Wrapper type for a curve25519 public key */
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typedef struct curve25519_public_key_t {
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uint8_t public_key[CURVE25519_PUBKEY_LEN];
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} curve25519_public_key_t;
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/** Wrapper type for a curve25519 secret key */
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typedef struct curve25519_secret_key_t {
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uint8_t secret_key[CURVE25519_SECKEY_LEN];
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} curve25519_secret_key_t;
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int curve25519_public_key_is_ok(const curve25519_public_key_t *);
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void curve25519_secret_key_generate(curve25519_secret_key_t *key_out,
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int extra_strong);
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void curve25519_public_key_generate(curve25519_public_key_t *key_out,
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const curve25519_secret_key_t *seckey);
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void curve25519_handshake(uint8_t *output,
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const curve25519_secret_key_t *,
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const curve25519_public_key_t *);
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#ifdef CRYPTO_CURVE25519_PRIVATE
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int curve25519_impl(uint8_t *output, const uint8_t *secret,
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const uint8_t *basepoint);
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#endif
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#endif
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